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Hourly Forecast
Daylight Hours
06:48
Sunrise
19:00
Sunset
Moon
Waxing Crescent
12:36
Moonrise
21:13
Moonset
Daily Forecast
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Air Quality Data Available
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UV Index
Humidity
Weather in Granite City today, September 16, 2026
Granite City looks cloudy on September 16, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. The morning sky stays heavily clouded, with cover near 100% around 08:00. Grey conditions set the early tone before any later change.
The temperature range runs from about 24°C up to 36°C. Moisture in the air spans 43%-89%, with the highest values around 08:00. Winds stay light, near 6.1 km/h by 17:00, so the day feels still more than breezy.
Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 16.0 km, briefly nearer 15.0 km. Daylight runs from 06:48 to 19:00, lasting 12 hours 11 minutes of sunlight today.
The practical takeaway for Granite City on September 16, 2026 is a cloudy day that stays usable, just not particularly bright, around 36°C.
Frequently asked questions about weather in Granite City
How warm does it get in Granite City?
The warmest month in Granite City is July, with average high temperatures of 31°C. The average temperature during this period is around 26°C.
How cold does it get in Granite City?
The coldest month in Granite City is January, with average low temperatures of -3°C. The average temperature during this period is around 0°C.
What is the wettest time of year in Granite City?
The wettest month in Granite City is April, with an average of 129mm of precipitation.
What is the driest time of year in Granite City?
The driest month in Granite City is December, with an average of 59mm of precipitation.
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